Vulnerability · Published Oct 10, 2026 · Assigned by VulnCheck
CVE-2026-108596OpenLIT 2.1.0 Authorization Bypass via x-openlit-project-id Header
Medium 5.3
In plain English
A medium-severity authorization bypass via user-controlled key in openlit from openlit. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 76.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenLIT 2.1.0 contains an authorization bypass vulnerability that allows authenticated users to read other projects' telemetry by supplying a forged x-openlit-project-id header. Attackers who know a victim project id and database config id can query the trace read API to obtain traces including LLM prompts and completions.
Affected products (as reported)
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://hackmd.io/@haind/openlit-project-context-read third-party-advisory
- https://github.com/openlit/openlit/blob/9938c66638666ca5d3bcb850350faa82e510924b/src/client/src/lib/telemetry-source.ts#L113-L125 technical-description
- https://github.com/openlit/openlit/blob/9938c66638666ca5d3bcb850350faa82e510924b/src/client/src/middleware/check-auth.ts#L22-L33 technical-description
- https://github.com/openlit/openlit product
- VulnCheck Advisory: OpenLIT 2.1.0 Authorization Bypass via x-openlit-project-id Header third-party-advisory